And to think thatAttorney General Eric Holder is getting testy about congressional calls for his resignation. After all, the Justice Department has nothing to hide, right?: The Obama Administration has abruptly sealed court records containing alarming details of how Mexican drug smugglers murdered a U.S. Border patrol agent with a gun connected to a failed federal experiment that allowed firearms to be smuggled into Mexico. This means information will now be kept from the public as well as the media. Could this be a cover-up on the part of the “most transparent” administration in history? After all, the rifle used...